| Business | Phone |
| Harrisburg City Sewerage Plant 406 Seright St, Harrisburg 62946 | (618) 253-7536 |
| Harrisburg Public Property 1300 W Sloan, Harrisburg 62946 | (618) 252-8038 |
| Harrisburg Street & Alley Dept 919 Bauman Ln, Harrisburg 62946 | (618) 252-4302 |
| Harrisburg Township Assistance 111 W South St, Harrisburg 62946 | (618) 252-8363 |
| Harrisburg Township Government 111 W South St, Harrisburg 62946 | (618) 253-6231 |
| Harrisburg Twp Park District 921 W Poplar St, Harrisburg 62946 | (618) 252-2111 |
| Harrisburg Twp Park Mntnc Dept W South, Harrisburg 62946 | (618) 252-3085 |
| Harrisburg Water Garage 921 Bauman Ln, Harrisburg 62946 | (618) 253-7726 |
| Treasurer's Office 110 E Locust St, Harrisburg 62946 | (618) 252-3801 |